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1. 发明授权

US4841521A Method and system for bidirectionally transmitting data 失效
标题翻译：双向传输数据的方法和系统
公开(公告)号：US4841521A
公开(公告)日：1989-06-20
申请号：US55036
申请日：1987-05-28
申请人： Eiichi Amada , Hirotoshi Shirasu , Hiroshi Takatori , Tohru Kazawa , Toshiro Suzuki , Takanori Miyamoto , Tatsuya Kameyama
发明人： Eiichi Amada , Hirotoshi Shirasu , Hiroshi Takatori , Tohru Kazawa , Toshiro Suzuki , Takanori Miyamoto , Tatsuya Kameyama
IPC分类号： H04L5/14
CPC分类号： H04L5/1484
摘要： A method and a system for bidirectional transmission/reception of data between two terminal stations, in which each transmission period is divided into a plurality of first time sections for relatively low speed data transmission and at least one second time section for relatively high speed data transmission, the direction of transmission between the terminal stations being predetermined in each of the first time sections, while the direction of transmission between the terminal stations is reversible in each of the second time sections, each second time section being preceded by one of the first time sections. Transmission of information data and control data is performed from one to the other terminal station in a predetermined direction in each first time section, and the direction of data transmission between the terminal stations in the next second time section is determined on the basis of control data contained in the relatively low speed data transmission.
摘要翻译：一种用于在两个终端站之间双向传输/接收数据的方法和系统，其中每个传输周期被分成用于相对低速数据传输的多个第一时间段和用于相对高速数据传输的至少一个第二时间段所述终端站之间的传输方向在所述第一时间段中的每一个中是预定的，而在所述第二时间段中的每一个中，所述终端站之间的传输方向是可逆的，每个第二时间段之前是所述第一时间段之一部分。在每个第一时间段中，以预定方向从一个终端站到另一个终端站发送信息数据和控制数据，并且基于控制数据确定下一个第二时间段中的终端站之间的数据传输方向包含在相对低速的数据传输中。

2. 发明授权

US5276709A Correlation code transmission system 失效
标题翻译：相关代码传输系统
公开(公告)号：US5276709A
公开(公告)日：1994-01-04
申请号：US640351
申请日：1991-01-15
申请人： Tohru Kazawa , Takanori Miyamoto , Toshiro Suzuki , Takashi Morita , Ichiro Mass'e
发明人： Tohru Kazawa , Takanori Miyamoto , Toshiro Suzuki , Takashi Morita , Ichiro Mass'e
IPC分类号： H04J3/06 , H04L7/08 , H04B14/04
CPC分类号： H04L7/08 , H04J3/0608 , H04L25/4925 , H04L25/497
摘要： A correlation transmission coder or a correlation code transmission system whereby the correlation transmission coder generates a transmission signal to be sent on a transmission line, the transmission signal being determined, as with a partial response class 4 signal, by using already-transmitted data strings and data being transmitted by adding a specified length of frame synchronization pattern in each constant frame period. What is characteristic of this invention is the provision of which reset or preset in each frame period registers that are used commonly by a transmission system and a precoder that makes up the coder. Another characteristic is the provision of which inserts, immediately before the frame synchronization pattern, internal data that is added to the transmission data by the transmission system and the precoder.
摘要翻译： PCT No.PCT / JP90 / 01118 Sec。 371日期1991年1月15日 102（e）日期1991年1月15日PCT提交1990年8月31日PCT公布。出版物WO91 / 日期1997年7月25日。相关传输编码器或相关代码传输系统，其中相关传输编码器产生要在传输线路上发送的传输信号，传输信号如部分响应等级4信号一样由使用已经发送的数据串和通过在每个恒定帧周期中添加指定长度的帧同步模式来发送的数据。本发明的特征是在每个帧周期寄存器中提供由传输系统和组成编码器的预编码器共同使用的复位或预置。另一个特征是提供在帧同步模式之前的插入，由传输系统和预编码器添加到传输数据的内部数据。

3. 发明授权

US5434886A Digital communication system 失效
标题翻译：数字通讯系统
公开(公告)号：US5434886A
公开(公告)日：1995-07-18
申请号：US4390
申请日：1993-01-14
申请人： Tohru Kazawa , Takanori Miyamoto , Katsuyuki Miyazaki
发明人： Tohru Kazawa , Takanori Miyamoto , Katsuyuki Miyazaki
IPC分类号： H04L25/08 , H03M13/23 , H04L25/497 , H04L5/12
CPC分类号： H04L25/497 , H04L1/0043 , H04L1/0046 , H04L1/0052 , H04L1/0054
摘要： A digital communications system suitable for high-speed data transmission includes a transmitter and a receiver providing the ability to selectively switch between multiple coding and decoding methods. The transmitter includes a plurality of trellis coders, each of which performs a different type of coding on a transmission signal. The receiver includes a plurality of Viterbi decoders, corresponding to the different types of coders in the transmitter, for decoding the transmission signal. The receiver also includes a selector for determining which of the decoder outputs to choose from based on the frequency of code violations detected in the transmission signal. The present invention thus provides a flexible apparatus for improving the quality of high-speed data transmissions.
摘要翻译：适用于高速数据传输的数字通信系统包括发射机和接收机，其提供选择性地在多种编码和解码方法之间切换的能力。发射机包括多个网格编码器，每个网格编码器对传输信号执行不同类型的编码。接收机包括对应于发射机中的不同类型的编码器的多个维特比解码器，用于解码传输信号。接收机还包括一个选择器，用于基于在发送信号中检测到的代码违例的频率来确定哪个解码器输出被选择。因此，本发明提供了一种用于提高高速数据传输质量的灵活装置。

4. 发明授权

US5123030A Timing extraction method and communication system 失效
标题翻译：时间提取方法和通信系统
公开(公告)号：US5123030A
公开(公告)日：1992-06-16
申请号：US492059
申请日：1990-03-12
申请人： Tohru Kazawa , Takanori Miyamoto , Toshiroh Suzuki , Shigeo Nishita , Ichiro Masse , Takashi Morita , Souichi Yamashita
发明人： Tohru Kazawa , Takanori Miyamoto , Toshiroh Suzuki , Shigeo Nishita , Ichiro Masse , Takashi Morita , Souichi Yamashita
IPC分类号： H04L7/033 , H03M5/20 , H04L25/40 , H04L25/49
CPC分类号： H03M5/20 , G11B20/10037
摘要： Clock timing is extracted from N level, multilevel codes of megabits per second data by determining a baud clock among the N-1 possible clocks synchronized to all the level cross points. A discriminator is used with a clock and if correct information is not obtained, the clock is changed.
摘要翻译：通过确定与所有电平交叉点同步的N-1个可能时钟之间的波特率时钟，从N电平，兆位每秒数据的多电平代码提取时钟定时。鉴别器与时钟一起使用，如果没有获得正确的信息，则时钟被改变。

5. 发明授权

US5267267A Timing extraction method and communication system 失效
标题翻译：定时提取方法与通信系统
公开(公告)号：US5267267A
公开(公告)日：1993-11-30
申请号：US845196
申请日：1992-03-03
申请人： Tohru Kazawa , Takanori Miyamoto , Toshiroh Suzuki , Shigeo Nishita , Ichiro Masse , Takashi Morita , Souichi Yamashita
发明人： Tohru Kazawa , Takanori Miyamoto , Toshiroh Suzuki , Shigeo Nishita , Ichiro Masse , Takashi Morita , Souichi Yamashita
IPC分类号： H03M5/20 , H04L7/033 , H04L25/49
CPC分类号： H03M5/20 , H04L7/0331 , H04L7/0337 , G11B20/10037
摘要： Clock timing is extracted from N level, multilevel codes of megabits per second data by determining a baud clock among the N-1 possible clocks synchronized to all the level cross points. A discriminator is used with a clock and if correct information is not obtained, the clock is changed.
摘要翻译：通过确定与所有电平交叉点同步的N-1个可能时钟之间的波特率时钟，从N电平，兆位每秒数据的多电平代码提取时钟定时。鉴别器与时钟一起使用，如果没有获得正确的信息，则时钟被改变。

6. 发明授权

US5237590A Timing extraction circuit and communication system utilizing the same 失效
标题翻译：定时提取电路及利用其的通信系统
公开(公告)号：US5237590A
公开(公告)日：1993-08-17
申请号：US804925
申请日：1991-12-11
申请人： Tohru Kazawa , Toshiro Suzuki , Takashi Morita , Souichi Yamashima
发明人： Tohru Kazawa , Toshiro Suzuki , Takashi Morita , Souichi Yamashima
IPC分类号： H03M5/20 , H04L7/033
CPC分类号： H03M5/20 , H04L7/0331 , H04L7/0337 , G11B20/10037
摘要： A timing clock extraction circuit for extracting from a multilevel code signal, transmitted at a predetermined baud rate, in which cross timings with a reference level are generated at frequency timings several times the baud rate, a clock pulse train at the baud rate and obtaining discriminative data from the multilevel code signal in accordance with the extracted clock pulse train. The timing clock extraction circuit includes a detector for detecting cross timings between the multilevel code signal and a predetermined threshold value; a synchronization control circuit for outputting a clock pulse train having a frequency several times said baud rate in synchronism with the cross timings; a clock generator for dividing the several-time clock pulses to generate a plurality of trains of baud rate clock pulses in different phase from each other; and a decision unit for distinguishing a baud rate clock pulse train from the plurality of trains of baud rate clock pulses which are synchronized with discriminative points of the multilevel code signal by using the cross timings and the clock pulse train having a frequency several times the baud rate.
摘要翻译：一种定时时钟提取电路，用于从按照波特率的频率定时产生具有参考电平的交叉定时的以预定波特率发送的多电平码信号，波特率的时钟脉冲串，并获得鉴别码来自多级代码信号的数据根据提取的时钟脉冲串。定时时钟提取电路包括用于检测多级代码信号与预定阈值之间的交叉定时的检测器; 同步控制电路，用于与交叉定时同步地输出具有频率几倍所述波特率的时钟脉冲串; 时钟发生器，用于分割多个时钟脉冲以产生彼此不同相位的多个波特率时钟脉冲串; 以及判定单元，用于通过使用交叉定时和具有频率几倍的波特率的时钟脉冲串来区分波特率时钟脉冲串与与多个代码信号的判别点同步的多个波特率时钟脉冲串率。

7. 发明授权

US08705965B2 Method of recovery from sleep state of an ONU in a PON system capable of power saving 失效
标题翻译：从能够省电的PON系统中的ONU的睡眠状态恢复的方法
公开(公告)号：US08705965B2
公开(公告)日：2014-04-22
申请号：US12987753
申请日：2011-01-10
申请人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
发明人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
IPC分类号： H04J14/00
CPC分类号： H04Q11/0067 , H04Q2011/0064 , H04Q2011/0079
摘要： There is a need to recover an ONU from a sleep state for communication with the PON before a specified sleep cancel time in a short period of time without degrading the band use efficiency. An OLT manages an electric state of each ONU connected to a PON. When at least one ONU is in sleep mode, the OLT transmits a grant to allocate a band for a sleep cancel report to the ONU. When the sleep-mode ONU requires communication, the ONU transmits the sleep cancel report to the OLT using the band for the sleep cancel report. When receiving the sleep cancel report, the OLT changes the managed ONU to a normal state and resumes the communication with the PON.
摘要翻译：需要在短时间内在指定的睡眠取消时间之前，从睡眠状态恢复ONU以与PON进行通信，而不降低频带使用效率。 OLT管理连接到PON的每个ONU的电状态。当至少一个ONU处于睡眠模式时，OLT向ONU发送用于为睡眠取消报告分配频带的许可。当睡眠模式ONU需要通信时，ONU使用睡眠取消报告的频带向OLT发送睡眠取消报告。当接收到睡眠取消报告时，OLT将被管理的ONU改变为正常状态并恢复与PON的通信。

8. 发明授权

US08189571B2 System apparatus and method for interconnecting TDM and frame/packet communication networks 有权
标题翻译：用于互连TDM和帧/分组通信网络的系统装置和方法
公开(公告)号：US08189571B2
公开(公告)日：2012-05-29
申请号：US11339449
申请日：2006-01-26
申请人： Masahiko Mizutani , Yoshihiro Ashi , Masayuki Takase , Atsushi Iwamura , Akihiko Tanaka , Hideki Endo , Tohru Kazawa
发明人： Masahiko Mizutani , Yoshihiro Ashi , Masayuki Takase , Atsushi Iwamura , Akihiko Tanaka , Hideki Endo , Tohru Kazawa
IPC分类号： H04L12/66
CPC分类号： H04L45/04 , H04J3/1617 , H04J2203/0083
摘要： An interconnection between fully synchronous networks and next-generation frame communications networks is disclosed. A means of bidirectional frame format conversion between a synchronous multiplexing system and a logical multiplexing system is provided, along with a method of transmitting data between different networks on a path as if it were being transmitted in the same network. Further, when converting network control information in an STM network into data suitable for a packet network, even across the boundary of a synchronous multiplexing system and a logical multiplexing system, a unified communication management means is provided over the whole path.
摘要翻译：公开了完全同步网络和下一代帧通信网络之间的互连。提供了在同步多路复用系统和逻辑多路复用系统之间的双向帧格式转换的方法，以及在路径上的不同网络之间传输数据的方法，如同在同一网络中传输一样。此外，当将STM网络中的网络控制信息转换为适用于分组网络的数据时，甚至跨越同步复用系统和逻辑多路复用系统的边界，在整个路径上提供统一的通信管理装置。

9. 发明授权

US08184975B2 Passive optical network system and optical line terminator 有权
标题翻译：无源光网络系统和光线路终端器
公开(公告)号：US08184975B2
公开(公告)日：2012-05-22
申请号：US12388020
申请日：2009-02-18
申请人： Masao Niibe , Tohru Kazawa , Takeshi Kiyose , Ryosuke Nishino
发明人： Masao Niibe , Tohru Kazawa , Takeshi Kiyose , Ryosuke Nishino
IPC分类号： H04J14/00 , H04B10/00
CPC分类号： H04Q11/0067 , H04B10/70 , H04J3/0652 , H04J3/0682 , H04Q2011/0064 , H04Q2011/0079
摘要： In a passive optical network system in which signals from a master station to plural slave stations are time-division multiplexed and transmitted, the slave stations different in transmission speed are mixedly contained. The master station (OLU) performs ranging for each transmission speed, and grasps all the slave stations different in transmission speed for each transmission speed, and generates a frame including signals of a suitable transmission speed corresponding to each slave station. When the frame is generated, in a downstream signal in which signals of plural transmission speeds are mixed, a dummy signal is set at a place where the transmission speed is changed, and a time necessary to follow a change in level of a received signal due to a change in optical level caused when the transmission speed is changed is secured. Thereby, each ONU avoids a reception error occurring in the time necessary to follow.
摘要翻译：在从主站到多个从站的信号被时分复用和发送的无源光网络系统中，传输速度不同的从站被混合地包含。主站（OLU）为每个传输速度执行测距，并且掌握每个传输速度的传输速度不同的所有从站，并且生成包括与每个从站对应的合适传输速度的信号的帧。当生成帧时，在混合有多个传输速度的信号的下行信号中，将虚拟信号设置在传输速度改变的地方，并且跟随接收信号的电平变化所需的时间导致当传输速度改变时引起的光学水平的变化。因此，每个ONU避免在所需的时间内发生的接收错误。

10. 发明申请

US20110211837A1 Method of Recovery From Sleep State of an Onu in a Pon System Capable of Power Saving 失效
标题翻译：从能够节能的Pon系统中的Onu睡眠状态恢复的方法
公开(公告)号：US20110211837A1
公开(公告)日：2011-09-01
申请号：US12987753
申请日：2011-01-10
申请人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
发明人： Jun Sugawa , Hiroki Ikeda , Tohru Kazawa
IPC分类号： H04B10/24
CPC分类号： H04Q11/0067 , H04Q2011/0064 , H04Q2011/0079
摘要： There is a need to recover an ONU from a sleep state for communication with the PON before a specified sleep cancel time in a short period of time without degrading the band use efficiency. An OLT manages an electric state of each ONU connected to a PON. When at least one ONU is in sleep mode, the OLT transmits a grant to allocate a band for a sleep cancel report to the ONU. When the sleep-mode ONU requires communication, the ONU transmits the sleep cancel report to the OLT using the band for the sleep cancel report. When receiving the sleep cancel report, the OLT changes the managed ONU to a normal state and resumes the communication with the PON.
摘要翻译：需要在短时间内在指定的睡眠取消时间之前，从睡眠状态恢复ONU以与PON进行通信，而不降低频带使用效率。 OLT管理连接到PON的每个ONU的电状态。当至少一个ONU处于睡眠模式时，OLT向ONU发送用于为睡眠取消报告分配频带的许可。当睡眠模式ONU需要通信时，ONU使用睡眠取消报告的频带向OLT发送睡眠取消报告。当接收到睡眠取消报告时，OLT将被管理的ONU改变为正常状态并恢复与PON的通信。

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